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Peculiarities of Alfven wave propagation along a nonuniform magnetic flux tube / N. V. Erkaev [et al.]> // Phys. Plasmas. - 2005. - Vol. 12, Is. 1. - Ст. 12905, DOI 10.1063/1.1833392. - Cited References: 18
. - ISSN 1070-664XРУБ Physics, Fluids & Plasmas Рубрики: HYDROMAGNETIC-WAVES TRANSFER EVENTS FIELD SLOW Кл.слова (ненормированные): Algebra -- Approximation theory -- Boundary conditions -- Electric conductivity -- Electric field effects -- Integral equations -- Magnetic flux -- Magnetohydrodynamics -- Perturbation techniques -- Polarization -- Vectors -- Velocity measurement -- Alfven wave propagation -- Axial symmetry -- Magnetic flux tubes -- Magnetosonic pulses -- Wave propagation Аннотация: Within the framework of the assumption of large azimuthal wave numbers, the equations for Alfven and slow magnetosonic waves are obtained using frozen-in material coordinates. These equations are specified for the case of a nonuniform magnetic field with axial symmetry. Assuming a meridional polarization of the magnetic field and velocity perturbations, the effects of Alfven wave propagation are analyzed which are related to geometric characteristics of a nonuniform magnetic field: (a) A finite curvature radius of the magnetic field lines and (b) convergence of magnetic field lines. The interaction between the Alfven and magnetosonic waves is found to be strongly dependent on the curvature radius of the magnetic tube and the local plasma beta parameter. The electric field amplitude and the length scale of a wave front are found to increase very strongly in the course of the Alfven wave propagation along a converging magnetic flux tube. Also studied is a temporal decrease of the wave perturbations which is caused by dissipation at the conducting boundary. (C) 2005 American Institute of Physics.
WOS, Scopus, Читать в сети ИФ Держатели документа: Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk 660036, Russia Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia Austrian Acad Sci, Inst Space Res, A-8042 Graz, Austria ИВМ СО РАН Intitute of Computational Modelling, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation State University of Krasnoyarsk, Krasnoyarsk 660041, Russian Federation Institute of Physics, State University, St. Petersburg 198504, Russian Federation Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria Доп.точки доступа: Erkaev, N. V.; Еркаев, Николай Васильевич; Shaidurov, V. A.; Semenov, V. S.; Langmayr, D.; Biernat, H. K. } Найти похожие
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